Tool for cleaning boiler-head cap-seats.



l w. T.' HOGARTH & D. K. DEAL. j TOOL FOR CLEANING BOILER HEAD CAP SEATS. 'APPLICATION FILED MAY, 1911.

-ofparts all as will be UNITED sTATEs PATENT oEEicE.

WILLIAM I-IOGARTH AND DANIEL K. DEAL, 0E WILIIALVISPORT, PENNSYLVANIA.

TOOL FOR CLEANING BOILER-HEAD CAP-SEATS.

To all whom t may concern.'

Be it known that we, WILLIAM`T.4 Ho- GARTH and DANIEL K. DEAL, citizens of the United States, and residents of the city of Williamsport, county of Lycoming, and State of Pennsylvania, have invented certain new and useful Improvements in Tools for Cleaning Boiler-Head CapfSea-ts, of which the followin is a specification.

Our invention re ates to tools for cleaning the cap seats on the boiler heads of'water tube boilers.

In water tube boilers the tubes are arranged with their ends secured in the tube sheets of the headers. Directly opposite the ends of the tubes the boiler heads or hand hold plates vare provided with hand holes which are closed by hand holecaps. To make tight joints between the caps and boiler head orv hand hole plate, either ground joints are provided or gaskets are interposed between the caps and the plate. In either case, when the caps are to be reset, it is necessary to thoroughly clean the plates by removingall traces ofthe old Gaskets or by scraping the ground joints, as the case may be. It is a diliicult task to remove the gaskets which have hardened on the plates and to clean the ground joints which have become incrusted, in order to permit tight joints to be made between the caps and the plates when the former are reset.

Il`he object of our invention is to provide a tool for removing the old gaskets and for scraping the ground joints above mentioned.

A further object of our invention is to provide a device of the class mentioned which shall be of simple construction, strong and durable and which may be readily operated. v

Other objects will appear hereinafter.

With these objects in /view our invention consists generally in a rod or stem, a scraperwlixed transversely of said stem, a slide on said stem, means for clamping said slide and said scraper upon opposite sides of a hand hole plate or boiler head and means for turning said stem.

Ourinvention further consists in various details of construction, and arrangements fully described hereinafter and particularly pointed out in the claims.

Ourinvention will `be more readily unspeeifieation of Letters Patent.

lFig. 3.

.the stem` 1.

v larly Patented May 14, 1912.

Application 1edMayv5, 1911. Serial N0. 625,160.

- derstood b 'reference to the accompanying drawings orming a part of tion and in which- Figure 1 is a side elevation of a tool embodylng our invention in its preferred form, Fig. 2 is a longitudinal section through the same, and Fig. 3 is a detail plan View of the knife o-r scraper.

Referring new to the drawings Aindi cates a hand hole plate or boiler head of a water tube boiler and B one of the handA holes therein to give access to a tube and which is closed by a cap.

The tool comprises a stein 1, a scraperor knife 2, a slide?) and a clamping member 4, together with suitable means for rotating the stem. The stem 1 is threaded as at 5 this specifica- 'throughout the greater portion of its length and one end thereof is squared as at 6 to reeelve a crank 7 or other suitable means for' rotating the same. The scraper 2 1s thread- -ed upon the .opposite end of the stem and comprises a transverse bar 8 and avpair of oit-set knives 9 at the ends thereof. The

4knives are preferably inclined in opposite directions from the axis of the bar 8 and also tothe axis of the-stem 1, as illustrated in lindicates a lock or jam nut for clamping the scraper 2 against rotation on The slide 3 consists of a circular member or disk of greater diameter than the apertures B of the plate A and provided upon its face adjacent the scraper with an extension portion l1 concentric therewith and adapted to extend within the aperture 2. The' opposite side of the slide is provided-with a convex extension 12 terminating in a flatl face or seat 13, surrounding the stem 1, the purpose of which will appear hereinafter.

14. indicates a centrally disposed bore extending through the member 3 of suilicient diameter: to receive the stem 1 and permitsaid member to slide free thereon, and 15 indicates a key carried by the member or slide 3 and engaging a key way 16 eXtendine longitudinally of the stem 1.'

lThe clamping memberl 4t ,comprises a transverse member 17 centrally tapped as-at 18 to receive the stem or screw 1 and yangu'- disposed arms 1 9 extendingv substantially parallel to the stem terminating in well rounded'ends or.` knobs 20. It is obvious that by turning the member 4 in one direction the slide 3 will be forced toward the scraper and thatl the tubesheet of the boiler may be clamped between the same as shown in Fig. 2. Suitable means are provided for reti-acting the, slide 8 as the clamping member L is turned in the opposite direction, To this end the member ft is pro .vided with a pair of' arms or extensions 2l,

the ends ol which are turned inwardly as at 2Q to engage a peripheral groove Z3 termed 10 in the slide 3.

In using the device the end with the kni't'e or scra'l'mr is inserted through the aperture B. rlhis may be readily done alfterretracting the i'nembers 3 and 4t sullioiently, by inl5 sorting one end et the scraper first. 'VIhe clamping' member `'t is then turned until the slide 3 engages the plate A\ and the knife or scraper drawn into close Contact with the opposite faee ot' the, plate. The, stein 1 is 2e then rotated by means ot' the erank 'Y or other means provided for the purpose.

This-will cause the member 3 and scraper l to rotate tlure\\ith,tho latter cleaning the gaskets ottj olf thel plate or scraping` ground surliaee as the ease ma)v be. .\s the wnrh progresses ened against the plate by turning the member -`lslightly. 'lhe member /lengages the sea t lil on the member Il aud. as thrre is nnth fing to hold the unmber -t it turns with the slide il, thus maintaining` a constanty distance lwtnjet-n the slide and scraper except when the t-lamping member L't is intentionally turned.

Having deseribed our invention what we claim :is new and desire to secure by lietters lat'ent is:A

l. tool olf' th:` elass described, comprising a stent, a transverse seraper tixed there- 'il te, a slide keyed to .said stem aud provided with an extension to engage in a hand hole in a. boiler head and a clamping' member the :scraper may be tightl the threaded on said stem and adapted to engage said slide.

2. A tool of the class described, comprising a stem, a transverse scraper fixed thereto, a slide on said stem, a clamping member threaded on said stem and adapted to engage said slide, means for clamping said slide and said scraper against opposite sides of a boiler head and means for turning said stem.

3. A tool of the class described, comprising a stem, a transverse scraper Xed thereto, a slide upon said stem provided with an annular recess, a clamping member threaded onsaid stom and engaging said slide, arms connected to said slide and engaging in said recess and means for turning said stem.

it. tool olf the class described, comprising a stemprovided. with a longitudinal `slot, a transv rse scraper npon'said stem, aslide on .said stem provided with a key engaging in said slot', said .slide having a redut-ed hearing shoulder on its outer face enen-cling` said stem and an extension on its inner Atace adapted to engage in a hand hole ot" a boiler head and also provided with a peripheral groove, a clamping member threaded upon said stem and adapted to engage said bearing shoulder, angular-ly disposed arms on said clamping member substant ially parallel with said stem, extensions tixed to said arms and having their ends inturned to engage said peripheral groove, and means for turning said stein.

. ln testimony whereof we have signed our names to this speeitic-,ation in the presence ot subscribing \\'itnesses.

W [Ll I AM T. l [OG ARTI] DANIEL K. DEAL.

lVitnesses:

J.- lt. Dunkin, Jas. l). lluinn. 

